ABB GJR5252300R310
ABB GJR5252300R310
ABB GJR5252300R310
EJA现场总线系列变送器的信号完全满足现场总线国际标准，实现了现场仪表之间真正的数字通讯。
现场总线的双向数字通讯使现场仪表与控制设备成为真正在线系统，超越了传统的模拟模式。它能精确传送各种数据如基于现场总线复合传感器功能的PV（处理量）及MV（操作量）。因此，基于现场总线通讯平台的EJA提供了更加灵活的通讯性能，并能节约成本（通过多点连接方式减少导线用量）。 EJA430A压力变送器用于测量液体、气体或蒸汽的液位、密度与压力，然后将其转变成4~20mADC的电流信号输出。EJA430A也可与BRAIN TM手操器、YHC4150、CENTUMCSTM、FieldMate、HART 375互相通讯，通过它们进行设定、监控等。
operator station and engineering station takes place via the system bus DigiNetS (Industrial Ethernet). user
Different transmission media (RJ45 twisted pair, thin, thick or fiber optic cables and mixed media) and network topology can be selected for the system bus.
Simple layout, due to the use of TCP/IP protocol, the system can also use the public telephone network (dial-up mode) or satellite to achieve ultra-long-distance communication.
Subsystems such as PLC communicate with the Industrial” system through the ModBus protocol interface. The system also supports IEC870-5 over-control protocol.
discussion.
The Flash EPROM inside the PS provides more than 220 functional modules (control algorithm subroutines), in addition to the basic ones specified in the IEC 61131 3 standard
In addition to this content, many powerful and rigorously tested function blocks from actual engineering applications have been expanded. any complex control
The scheme can be realized by the combination of these function blocks.
The function blocks provided by the system mainly include the following categories:
o
Analog processing
o
digital processing
loop regulation
Logical sequence control
c
logic operation
Monitoring function
Collection function.
c
arithmetic operations
c
TCP/IP protocol communication interface
Modbus protocol communication interface
1EC870-5 protocol communication interface (Telecontrol)
4.2 Field Controller PS
Industrial” field controller PS is a special process control station, which is embedded with field bus communication interface for users to use
Fieldbus technology offers very flexible options. Each PS allows to insert 4 fieldbus interface cards (the card type can be different),
Each card is connected to 1 field bus to collect process data and diagnostic information from the bus, the interface card is easy to replace and plug and play
(Plug & Play), and can be plugged and unplugged.
The field controller PS has the following characteristics:
o
Flexible: supports all international standard open fieldbuses and can be mixed
Simultaneous connection of 4 high-speed fieldbuses (max. 12 MBd)
Simple engineering: configuration, commissioning and diagnostics using only the same tool CBF (Control Build F) software
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Access to all information from the field including equipment management information
Global database of fieldbus devices, control levels and HMI (Human Machine Interface) usage systems
Module identification with production operating parameters
c
complete self-diagnosis
Compact and robust design
Front Panel Wiring
DIN rail (U-shaped) installation well can be directly wall mounted, simple and convenient
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Allowable operating ambient temperature…60 C, with automatic temperature monitoring
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EMC (Electromagnetic Compatibility) according to EN50082
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Certifications: CE, NAMUR, CSA, CSA-NRT
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